Well, 65 processes running on XP does not sound unusual. My system is currently running 70 processes but it varies depending on what I am running. I would suggest a routine like Belarc Advisor which will analyze your entire system and then give you a report on everything it finds. This a free software tool for personal use only. It cannot be used on commercial sites.
The website for Belarc Adivsor is as follows. Follow the links to download the software.: